1002021109979 has 8 divisors (see below), whose sum is σ = 1002557767680. Its totient is φ = 1001484602856.

The previous prime is 1002021109877. The next prime is 1002021109993. The reversal of 1002021109979 is 9799011202001.

1002021109979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002021109979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002021100979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14796254 + ... + 14863820.

It is an arithmetic number, because the mean of its divisors is an integer number (125319720960).

Almost surely, 2^{1002021109979} is an apocalyptic number.

1002021109979 is a deficient number, since it is larger than the sum of its proper divisors (536657701).

1002021109979 is an equidigital number, since it uses as much as digits as its factorization.

1002021109979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75289.

The product of its (nonzero) digits is 20412, while the sum is 41.

The spelling of 1002021109979 in words is "one trillion, two billion, twenty-one million, one hundred nine thousand, nine hundred seventy-nine".